Implements a robust file filtering system that combines .gitignore patterns, custom excludes, and glob matching. Provides efficient path matching with caching and supports complex exclusion rules. This utility is self-contained and can be extracted for use in any file processing application requiring ignore pattern handling.

Provides standardized functions for formatting MCP (Model Context Protocol) responses, including success responses and error responses with proper error codes. This isolated utility ensures consistent response formatting across all MCP tools and services, making it reusable in any MCP server implementation.

Defines the base interface for all language-specific parsing strategies, requiring implementations for symbol extraction and call relationship analysis. This abstract base class enables the strategy pattern for adding new language parsers without modifying core indexing logic, demonstrating a clean extensibility pattern.

Manages per-project instances of services and index managers using a cache keyed by project path. Provides thread-safe access to project-specific resources and automatic cleanup. This isolated component solves the common problem of multi-tenant resource management and can be reused in any application requiring per-context service instances.